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Util: more checks in get_dns_txt_records_base

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SChernykh 2023-11-07 12:34:36 +01:00
parent 8699e1887c
commit f4d709c0dd
1 changed files with 19 additions and 12 deletions
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7
src/util.cpp
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@ -508,6 +508,7 @@ bool get_dns_txt_records_base(const std::string& host, Callback<void, const char
} }
#ifdef _WIN32 #ifdef _WIN32
try {
PDNS_RECORD pQueryResults; PDNS_RECORD pQueryResults;
if (DnsQuery(host.c_str(), DNS_TYPE_TEXT, DNS_QUERY_STANDARD, NULL, &pQueryResults, NULL) != 0) { if (DnsQuery(host.c_str(), DNS_TYPE_TEXT, DNS_QUERY_STANDARD, NULL, &pQueryResults, NULL) != 0) {
return false; return false;
@ -516,14 +517,20 @@ bool get_dns_txt_records_base(const std::string& host, Callback<void, const char
for (PDNS_RECORD p = pQueryResults; p; p = p->pNext) { for (PDNS_RECORD p = pQueryResults; p; p = p->pNext) {
for (size_t j = 0; j < p->Data.TXT.dwStringCount; ++j) { for (size_t j = 0; j < p->Data.TXT.dwStringCount; ++j) {
const char* s = p->Data.TXT.pStringArray[j]; const char* s = p->Data.TXT.pStringArray[j];
if (s) {
const size_t n = strlen(s); const size_t n = strlen(s);
if (n > 0) { if (n > 0) {
callback(s, n); callback(s, n);
} }
} }
} }
}
DnsRecordListFree(pQueryResults, DnsFreeRecordList); DnsRecordListFree(pQueryResults, DnsFreeRecordList);
}
catch (...) {
return false;
}
return true; return true;
#elif defined(HAVE_RES_QUERY) #elif defined(HAVE_RES_QUERY)